从用户控件调用父页面上的方法
我正在使用我创建的用户控件（只是一个 .cs 文件而不是 .ascx 文件），它有一些魔力，并且根据控件生成的值，我需要它在“托管”的父页面上执行某些操作' 控制。在某些情况下需要调用一个方法（方法在父控件上）。
控件放置在父页面上，如下所示：
<customtag:MyControl ID="something" runat="server" />
我在控件本身上动态创建按钮等，但是当单击按钮时，例如，控件上有一个文本框，并且文本框的值是“ bob”，它需要调用包含控件的页面上的方法...我该如何完成此操作？
I am using a user control that I created (just a .cs file not an .ascx file), that does some magic and depending on a value generated by the control, I need it to do something on the parent page that is 'hosting' the control. It needs to call a method under certain circumstances (method is on the parent control).
the control is placed on the parent page like so:
<customtag:MyControl ID="something" runat="server" />
I'm dynamically creating buttons etc on the control itself but when a button is clicked, let's say for example that there's a text box on the control and if the value of the textbox is "bob" it needs to call a method on the page that's housing the control...how can I accomplish this?
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（3）
您可以按照casperOne的建议进行操作，但我不建议这样做。这将您的用户控件与父页面紧密耦合，这违背了用户控件的目的。
就我个人而言，我会向父页面可以处理的用户控件（例如
ButtonClicked）添加一个事件。在父级的事件处理程序中，以您认为合适的方式处理该事件。通过这种方式，您可以稍后将用户控件插入到不同的页面，而不必担心用户控件中需要特定类型父页面的逻辑。You could do what casperOne suggested, but I wouldn't advise it. This is tightly coupling your user control to your parent page, which kind of defeats the purpose of a user control.
Personally, I'd add an event to the user control (say,
ButtonClicked) that the parent page can handle. In the event handler in your parent, deal with the event however you see fit. This way you can plug the user control into a different page at a later date and not have to worry about logic in the user control that requires a specific kind of parent page.您应该能够通过 父属性。但是，它将作为控件返回给您。您必须将其转换为页面的类型才能访问您定义的页面上的任何方法。
You should be able to get the Page hosting the control through the Parent property. However, that's going to be returned to you as a Control. You have to cast it to the type of your page in order to access any methods on the page which you have defined.
我认为 casperOne 走在正确的轨道上，但还需要更进一步。我很高兴做出这样的假设：该用户控件将在更多页面上使用。 （我通常编写 VB.Net，抱歉，如果我的 C# 格式错误）
创建一个基本页面类（您可以将其存储在 App_Code 目录或项目中）：
现在确保您的所有页面都从代码中的该页面继承后面的文件：
现在在您的用户控件中您知道页面类型是什么并且可以调用
I think that casperOne is on the right track, but you need to go a step further. I'm giong to make the assumption that this user control will be used on more then on page. (I normally write VB.Net, sorry if my C# is malformed)
Make a base page class (you can store it in your App_Code directory or in a project):
Now make sure that all of your pages inherit from this page in your code behind file:
Now in your user control you know what the page type is and can call